A high-gain Yagi antenna and a preparation method thereof

A high-gain, antenna technology, used in antennas, antenna parts, antenna supports/installation devices, etc., to solve problems such as narrow operating frequency band, poor reflectivity, and difficulty

Pending Publication Date: 2019-01-22
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The Yagi antenna can achieve high gain. It has the advantages of simple feeding method and low cost, but its working frequency band is narrow. It is very difficult to determine the length of each vibrator only by theory. Generally, it is carried out by software simulation and intelligent optimization algorithm. Calculation, Yagi antenna is also called wave channel antenna and directional antenna. It consists of multiple passive oscillators and an active oscillator. The centers of each array are on a straight line, and there is a metal rod perpendicular to the center of each oscillator called a beam. , the metal rod should be insulated f...

Method used

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  • A high-gain Yagi antenna and a preparation method thereof

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Embodiment Construction

[0021] Such as figure 1 As shown, a high-gain Yagi antenna is provided, including a metal beam 1, and a plurality of passive oscillators 2 are arranged along the long direction of the metal beam. The passive oscillators are perpendicular to the metal beam, and the center line of each passive oscillator is Located in the same plane as the central axis of the metal beam, the metal rod is insulated from the passive vibrator, and a reflection unit is installed directly below the metal beam. Grid reflector. , the open end of the cone bucket is opposite to the metal beam rod, the cone bucket is a closed cone bucket with an open top and a closed bottom end or a grid cone bucket, and the center of the cone bucket is on the same line as the center line of the passive vibrator. The metal beam rod is electrically connected to the center of the cone bucket.

[0022] Provide a kind of high gain Yagi antenna preparation method, it is characterized in that:

[0023] (1) preset frequency, ...

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Abstract

The invention provides a Yagi antenna with high gain and a preparation method thereof are provide, include metal beam rods, A plurality of passive oscillators are arranged along the longitudinal direction of the metal beam bar, the passive vibrator is perpendicular to the metal beam bar, A median line of each passive oscillator is located in that same plane as the median axis of the metal beam bar, A metal rod is insulate from that passive vibrator, A reflective unit is arranged directly below the metal beam bar, The reflecting unit is a cone bucket, the open end of the cone bucket is oppositethe metal beam bar, the backward radiation from the yagi antenna 's own active array to the reflector is already weak, Using cone basket as reflector is beneficial to improve the front-to-back ratioof yagi antenna and obviously improve the gain of antenna. Sometimes in order to increase the forward gain of yagi antenna and reduce the side lobe, rectangular or circular grid mesh or V-shaped gridbar reflector parallel to the reflector can be used.

Description

technical field [0001] The invention relates to a high-gain Yagi antenna in the field of satellite navigation and a preparation method thereof. technical background [0002] The Yagi antenna can achieve high gain. It has the advantages of simple feeding method and low cost, but its working frequency band is narrow. It is very difficult to determine the length of each vibrator only by theory. Generally, it is carried out by software simulation and intelligent optimization algorithm. Calculation, Yagi antenna is also called wave channel antenna and directional antenna. It consists of multiple passive oscillators and an active oscillator. The centers of each array are on a straight line, and there is a metal rod perpendicular to the center of each oscillator called a beam. , the metal rod should be insulated from the active oscillator, and the passive oscillator needs to be fixed on the metal rod. The active array is generally half the resonance length and fed by the coaxial ...

Claims

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Application Information

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IPC IPC(8): H01Q1/12H01Q1/36H01Q19/17
CPCH01Q1/1242H01Q1/36H01Q19/17
Inventor 董建明
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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